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Unformatted text preview: KING FAHD UNIVERSITY OF PETROLEUM & MINERALS CHEMISTRY DEPARTMENT EXPERIMENTS IN PHYSICAL CHEMISTRY CHEM-311 Pr epar ed For Dr. M. I . Wazeer EX P # 12 l iquid viscosit y DONE BY: Al-Ghamdi, Kamal S. ID#: 901432 SEC.#: 56 Date Of Per for mance: 05-6-1996 Date Of Submission: 12-6-1996 INTRODUCTION 1. FALLING BALL METHOD:- I-Objective:--To obtain the viscosity of glycerol.-To obtain the activation energy of the viscus flow. II- Theory:- If the liquid is in a cylinder of radius R, a correction must be applied for the effect of the container walls on the motion of liquid as the ball falls, giving:- ( 29 =- - + 2 9 1 2 104 2 09 2 3 gr v r R r R o . . 2. OSTWALD VISCOMETER:- I-Objective:--To obtain the viscosity of a series of normal alkanes and primary alcohols.-To compare the precision and accuracy of measuring viscosities....
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